Kvl Definition and 92 Threads

Homework Statement Click on the link https://www.diigo.com/item/image/2sb3i/yjim Homework Equations KVL Law Similar Example : https://www.diigo.com/item/image/2sb3i/orwa The Attempt at a Solution (a) In the left loop : -8-12+VR2 = 0 VR2 = -20 v (b) In the big loop ...

Homework Statement Homework Equations ƩCurrent(in) = ƩCurrent(out) The Attempt at a Solution ----In situations like that, my book takes the node to be a positive voltage when the voltage source is connected like above. For some reason my professor takes it to be negative, is this why my...

Homework Statement http://img853.imageshack.us/img853/2038/homeworkprob18.jpg (everything copied above is as given, except 'I3' was supposed to just be 'I', but more simple for me if 'I3') Use Ohm's law and KVL to find the value of RHomework Equations V= IR KVL, and maybe KCL: KVL =...

Homework Statement Calculate the resistance of this combination of resistorsHomework Equations V=IRThe Attempt at a Solution By using KVL : V= 3I_{5} = I_{2} = 2I_{4} I = I_{1} + I_{2} I_{3} = I_{2} + I_{4} I_{1} = I_{5} + I_{4} I = I_{3} + I_{5}Now the final result could be obtained by the...

http://www.flickr.com/photos/53512951@N06/8229416013/in/photostream/ With regards to the circuit in the image linked above, I have been told to start in the bottom left hand corner and then work clockwise around the circuit, adding up all the voltages to see if they follow the KVL principle...

Hi, The picture below is part of the notes given to us by our teacher. In case it doesn't work, it's a double loop with a voltage source on the left arm, a resistor (R1) on the middle arm, and two resistors in series (R2 and R3) on the right arm. all the resistors and the voltage source are...

Hello, Why do we use KVL in Ac circuits ?! or to be more specific is it accurate to use it in Ac circuit , just the same accuracy as using it in Dc ?! Doesn't the current that pass through the circuit itself make it's own variable magnetic field , which crosses the loop of the circle ...

Hi everyone! Since this is very confusing for me, i wanted to know what is the best choice to take in choosing the kvl and kcl. The questions are ? How many KVL and KCL i should take ?? ( best number, without redundance) And is there a way to see if a kvl or kcl is linear dependent on...

I've been asked to prove KVL and KCL using this circuit, but my vectors don't add up. ei Vr1+ Vr2 + Vc1+Vc2 ≠ Vtotal, same goes for Current, but I at least got the correct angle for the current Tried using vector addition, using addition of the vectors in complex form and even tried using this...

Homework Statement I should find i1 and i2. Homework Equations V = R*I KCL KVL The Attempt at a Solution I have no idea where to even start, so I tried doing different things, but nothing that I do works. I am just really frustrated right now, for failing at doing such a simple thing. I...

This is actually a solved example of Thevenin's principle in my textbook and I understand all of it except the part that I'm attaching to this post below; the part where KVL (Kirchoff's Voltage Law) is applied. Homework Statement Find Eth in the circuit shown in the attached figure...

Homework Statement I've obtained the node equations that's in the matrix for rows 1, 2, and 4. I got 3 as well but I'm not sure if my analysis was correct. http://img252.imageshack.us/img252/3151/nodeq.jpg The Attempt at a Solution http://img684.imageshack.us/img684/9803/dsc0010van.jpg So...

Homework Statement 1. Using Kirchhoff’s Laws, find all the currents flowing in the circuit. 2. Hence, determine the voltage across each resistor and show that all loops comply with KVL Homework Equations KVL and KCL The Attempt at a Solution Please see the pictures...

Now as you can see in the picture a common base configuration of BJT. The green markings in the picture are resistances. :p My question is: By KVL : VBB = VBE + IE*RB which means that IE is esentially a constant because VBB , VBE, RB are constants. Now If Voltage Vcb is increased Early...

Homework Statement Please check attachment or picture below http://i.imgur.com/7Op7H.png Homework Equations KVL, KCL The Attempt at a Solution I try to solve KVL and KCL equations. I didn't get any of answer above. Can I say I1 = -I2? Thanks!

Homework Statement In the figure, calculate v_0 and i_0 when v_s = 1 Homework Equations Using Mesh Currents: KVL: The sum of all voltages around a closed loop is equal to zero. Ohm's Law: V = IR Cramer's Rule: i2 = delta2/deltaThe Attempt at a Solution I first designated the lower left loop...

Homework Statement [PLAIN]http://img163.imageshack.us/img163/408/circuit2w.jpg We are asked to solve for I. I found I = -4 Amps. I want to verify my answer using KVL in the bottom left mesh Homework Equations KVLThe Attempt at a Solution I follow the convention: voltage drops are positive...

Here's my work. When I apply KVL around loop 1, I get +5V, but when I apply it around loop 2, I get -5, which is inconsistent with my first results? Where am I going wrong, or have I disproved a fundamental law?

Homework Statement I am trying to find the KVL equation for this BJT in order to find Ib. http://www.ece.auckland.ac.nz/oasis/a/att/qtatt/2028/2/261/IM010 Homework Equations The Attempt at a Solution My current equation looks like this. Vcc - IcRc - IbRb - Vbe = 0 I am...

Hi, I just took up a course on biomedical engineering. And i have no background knowledge on engineering, having difficulty in following up in class. Can anyone teach me the basic? i was studying on transducer (sensor/actuator), focusing more on sensor. Ohm's law, KVL, KCL, voltage...

i generally get confused in polarities of inductors and capacitors while doing KVL. eg about a series RLC circuit ,the equation turns out to be ( Ldi/dt + iR + Vc = 0 ) this is the equation about assumed 'i' if we assume both capacitor and inductor in charging mode... ... what if I assume...

Homework Statement I am asked to solve for vX, PDEV BY iS1, P ABS BY vS3 (please see attached figure). We have only covered KCL, KVL, Ohm's law and Power in class. No Thevinen theorem, so it can't be used to help solve. The Attempt at a Solution I know that current will...

Hi, :smile: Please have a see on this circuit diagram: http://img192.imageshack.us/img192/7726/meshkvl.jpg I used these equations: 1: I1 = I2 + I3 (Using KCL at junction e) 2: 6 - 4I2 + 4 - 2I2 = 0 (Using KVL around afeba) 3: 3 - 6I3 - 4 - 4I2 = 0 (Using KVL around dcbed) I2 = 2.8 A I1 = 4.5...

hello everyone,:wink: my book says: \sum E = \sum IR where E is emf. it says the sum of all emfs equal sum of all IR terms. 1:-- please have a look on this PDF...

Homework Statement Find the value of Vk http://oi54.tinypic.com/2s6x005.jpg Homework Equations The Attempt at a Solution Assuming dependent Vk = 12i -60 + 4i + 12i + 12i = 0 -60 + 28i = 0 i = 2.14 Vk = 12 * 2.14 = 25 .68 ? Answer is 18. Can someone tell me where I am going wrong ?

Here is my circuit diagram. http://s1227.photobucket.com/albums/ee430/Shayaan_Mustafa/?action=view&current=untitled-1.jpg&t=1299237316875 I am unable to solve my circuit with the help of Kirchhoff's law: Here is my KVL equations: 24-v1-v3-v8=0------(1) v3-v2-v4-v7=0------(2)...

Homework Statement Basically, find Vab [PLAIN]http://carlodelmundo.com/hw/circuit.png Is this correct -- note: please tell me that my methodology is sound; DO NOT GIVE ME A NUMERICAL ANSWER. The problem asks for VAB. What's weird to me is that there is a potential across two...

Homework Statement Homework Equations KVL, the sum of all voltages around a loop equal 0The Attempt at a Solution Vx is just the difference of the bottom node to the right node. With KVL I just add up the the voltage differences in a loop and equal to zero right? -15+12+6+Vx=0 Vx = -3 ...

Homework Statement http://i139.photobucket.com/albums/q292/strkthug/KCL/kclandkvl.png Homework Equations The Attempt at a Solution I think since x2 is 2a and x3 is 3a then x5 should be 5a and I have no idead where to go from there

Hi, I understand that you cannot apply KVL to voltage sources connected in parallel, unless both voltage sources are the same, as this violates KVL. However, I want to know why? Just a simple 2-3 line explanation will suffice. Regards

i can't understand how they how the member of which i point too

in this photo there is the circuit and the KVL of the solution but when i tried to do the KVL i go from the arc(3 lines represents potential zero) in counter clockwise direction so i get V_L + V_C+V_R-V_s=0 when i go against the direction of a current the voltage is on PLUS when in the...

http://i49.tinypic.com/1yu634.jpg this is a part of the solution " the is a voltage drop on capacitor C1 which makes current shock on C1 and a current shock on R2 and R3 and it makes a KVL contradiction on the right branch and the outer branch. and that's why the continuety laws...

Given: In the circuit shown above, 192 V is dropped across the unknown resistor, Ro. Required: Determine the value of Ro. V = iR, KCL and KVL I really don't know where to go on this one. I know that the right side's voltage will need to add up to zero, but that's about all I know.

Homework Statement Not really a problem, but we're learning about source-free RL circuits and the instructor was deriving the current w.r.t time. I've actually seen this derived a few times but one thing has always bothered me. Looking at this picture recreated from the text...

I'm trying to solve for a number of different currents in a circuit, and I'm wondering how to do KVL with a current source in a loop? The current source is actually part of two loops, so is it possible to just name the current source 'V' during KVL and add (or subtract) the two resulting...

Homework Statement Find R_2 in the circuit below. http://img214.imageshack.us/img214/6396/circuithh3.jpg Homework Equations Kirchoff's Current Law: \sum {I_{IN} } = \sum {I_{OUT} } Kirchoff's Voltage Law: \sum {V = 0}The Attempt at a Solution Using KCL for the node joining the 8ohm...

For this question I was thinking about doing KVL around the entire circuit, or do Mesh in the individual loops. Any suggestions?

What happens when you do a KVL through and current source? A formula I can not understand ns=120*f/p f=frequency P=number of poles ….. How shall you know how many poles you got?, my old teacher just wrote it down as it would be obvious. But I think ti is related to what kind of...

There was a thread where the thread starter pointed out a video lecture where a MIT prof claimed that KVL was incorrectly used in the analysis of self inductive circuits in almost all textbooks. I thought it was an interesting read and wanted more opinions on the idea, however I cannot find the...

help! KVL and KCL SOLVED PROBLEMS! undefinedundefinedundefined I need some websites of solved problems containing KCL and KVL in a simple DC circuit...please post some links! thanks!

Quick question that is throwing me off... If you have a dependant current source in a parallel circuit, how do you represent that in your KCL equation? The one in this problem is Vo/2000. I took that as I=V/R so R=2000. Since it is in a parallel circuit on its own 'branch' I used Vs/2000...